从China供应商批发进口7410b Angular Contact Ball Bearing — FOB条款

The 7410B angular contact ball bearing from Shandong Linqing Deo Bearing Co., Ltd. carries a 70 mm bore diameter and a 40-degree contact angle, built to carry combined radial and axial loads at elevated rotational speeds. The inner ring, outer ring, and balls are manufactured from chrome steel equivalent to GCr15 / SUJ2, a through-hardened alloy that gives stable dimensional behaviour under cyclic stress and moderate temperatures. This single-row configuration is intended for applications where thrust load in one direction pairs with radial load, and where precise shaft location matters. The ISO 9001:2000 certification noted on the listing covers the quality system behind manufacture and inspection, though buyers should request current certificate scope and validity directly.

Chrome steel GCr15 / SUJ2 is the standard material class for this bearing size range, offering a typical hardness of 60-64 HRC after heat treatment and a microstructure suited to rolling-contact fatigue lives defined by ISO 281. The 40-degree contact angle is steeper than the 15-degree and 25-degree variants, trading higher axial load capacity for reduced radial capacity, a deliberate design point for pump impellers, compressor stages, and gearbox shafts where axial thrust dominates. Standard industry tolerances for this series follow ISO 492 / DIN 620 for dimensional and running accuracy; bore tolerance is typically P6 or better for machine-tool grades, though the exact class should be confirmed with the supplier. Cage materials are typically pressed steel or brass, with synthetic options available for special speed or chemical environments.

Primary applications include centrifugal pumps, screw compressors, helical and bevel gearboxes, and machine-tool main spindles where the bearing must resist both cutting forces and belt tension. OEMs in general machinery, power transmission, and automotive component manufacturing represent the core import segments. The supplier lists a minimum order of one piece and expresses supply capacity at 500 000 sets per month, suggesting substantial production scale. Packaging is described as simple package or custom as required, with sample packaging available. Buyers should confirm whether the quoted unit price range of USD 1-50 applies to the specific quantity tier and precision grade they need, and whether the stock position applies to the exact variant they require.

Shandong Linqing Deo Bearing Co., Ltd. operates from the Linqing Tangyuan Economic Development Zone in Linqing, Qingdao, China, a region with established bearing manufacturing infrastructure. The supplier holds a harbor trust tier and lists a response rate of 0.00 percent with zero average response hours, which signals that direct communication should be initiated with clear expectations for reply timing. The address places it within Shandong Province, one of China's principal clusters for bearing production and related supply chains, which may offer logistics advantages for consolidated shipments.

The company profile as presented does not state founding year, employee count, revenue, specific client names, or factory floor area, so no history or scale should be assumed. What is verifiable is the ISO 9001:2000 quality certification, the stated monthly capacity of 500 000 sets, and the willingness to supply from one piece upward. Buyers are advised to request a current ISO certificate copy, factory audit reports if available, and reference customers in their own industry before committing to volume orders. The lack of response data points to the need for proactive follow-up rather than any judgement on capability.